JPH0380416U - - Google Patents
Info
- Publication number
- JPH0380416U JPH0380416U JP14040989U JP14040989U JPH0380416U JP H0380416 U JPH0380416 U JP H0380416U JP 14040989 U JP14040989 U JP 14040989U JP 14040989 U JP14040989 U JP 14040989U JP H0380416 U JPH0380416 U JP H0380416U
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- shielding surface
- view
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
第１図乃至第１２図は本考案の一実施例を示し
、第１図は正面図、第２図は側断面図、第３図は
底面図、第４図は第１板材の正面図、第５図は同
側面図、第６図は同底面図、第７図は第２板材の
正面図、第８図は同側面図、第９図は同底面図、
第１０図は同背面図、第１１図は本発明と従来装
置との輝度の測定結果を示す正面図、第１２図は
作用説明用の断面図である。第１３図は他の実施
例を示す第２板材の背面図である。第１４図乃至
第１９図は他の一実施例を示し、第１４図は正面
図、第１５図は側断面図、第１６図は底面図、第
１７図は導光板の正面図、第１８図は同側面図、
第１９図は同底面図である。第２０図は従来例を
示す断面図である。
１５……導光板、１６……光放散面、１７……
遮光面、２４……光源、２６……乱反射部。
1 to 12 show an embodiment of the present invention, in which FIG. 1 is a front view, FIG. 2 is a side sectional view, FIG. 3 is a bottom view, and FIG. 4 is a front view of the first plate. Figure 5 is a side view of the same, Figure 6 is a bottom view of the same, Figure 7 is a front view of the second plate, Figure 8 is a side view of the same, Figure 9 is a bottom view of the same,
FIG. 10 is a rear view of the same, FIG. 11 is a front view showing measurement results of luminance between the present invention and a conventional device, and FIG. 12 is a sectional view for explaining the operation. FIG. 13 is a rear view of a second plate showing another embodiment. 14 to 19 show another embodiment, FIG. 14 is a front view, FIG. 15 is a side sectional view, FIG. 16 is a bottom view, FIG. 17 is a front view of the light guide plate, and FIG. 18 is a front view of the light guide plate. The figure is the same side view,
FIG. 19 is a bottom view of the same. FIG. 20 is a sectional view showing a conventional example. 15...Light guide plate, 16...Light diffusion surface, 17...
Light shielding surface, 24... light source, 26... diffused reflection section.
Claims (1)
された導光板１５を備え、光源２４の光を、導光
板１５の両側端面１８から入射して導光板１５の
光放散面１６から放散させ、光放散面１６側を発
光させるようにした導光板装置において、 導光板１５が前記両側端面１８から中央部に向
けて徐々に肉薄になるように、導光板１５の光放
散面１６が両側端から中央に向けて下降傾斜され
、導光板１５の光放散面１６につや消し加工が施
され、導光板１５の遮光面１７側に、光を乱反射
する乱反射部２６が設けられ、該乱反射部２６は
、光源２４に近い側から遠い側に向けて遮光面１
７に対する割合が徐々に多くなるように形成され
ていることを特徴とする導光板装置。[Claims for Utility Model Registration] The light guide plate 15 is provided with a light guide plate 15 having one side as a light-diffusing surface 16 and the other side as a light-shielding surface 17. In the light guide plate device, the light guide plate 15 is arranged such that the light guide plate 15 gradually becomes thinner from the both side end surfaces 18 toward the center. The light-diffusing surfaces 16 of 15 are tilted downward from both ends toward the center, the light-diffusing surfaces 16 of the light guide plate 15 are matted, and the light-shielding surface 17 side of the light guide plate 15 has a diffused reflection section 26 that diffusely reflects light. is provided, and the diffused reflection section 26 extends from the light shielding surface 1 from the side close to the light source 24 to the side far away from the light source 24.
1. A light guide plate device characterized in that the light guide plate device is formed so that a ratio of 7 to 7 gradually increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989140409U JPH0736348Y2 (en) | 1989-12-04 | 1989-12-04 | Light guide plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989140409U JPH0736348Y2 (en) | 1989-12-04 | 1989-12-04 | Light guide plate device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380416U true JPH0380416U (en) | 1991-08-19 |
| JPH0736348Y2 JPH0736348Y2 (en) | 1995-08-16 |
Family
ID=31687385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989140409U Expired - Lifetime JPH0736348Y2 (en) | 1989-12-04 | 1989-12-04 | Light guide plate device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736348Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128383A (en) * | 1981-02-02 | 1982-08-09 | Mitsubishi Electric Corp | Surface lighting apparatus |
| JPS6265676U (en) * | 1985-10-15 | 1987-04-23 |
-
1989
- 1989-12-04 JP JP1989140409U patent/JPH0736348Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128383A (en) * | 1981-02-02 | 1982-08-09 | Mitsubishi Electric Corp | Surface lighting apparatus |
| JPS6265676U (en) * | 1985-10-15 | 1987-04-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0736348Y2 (en) | 1995-08-16 |
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